On Mon, Aug 20, 2012 at 10:07:54AM +0100, Will Deacon wrote: > On Fri, Aug 17, 2012 at 08:06:07AM +0100, Arnd Bergmann wrote: > > Sorry for the dumb question, but why do you even need PTRACE_GET_THREAD_AREA > > for 64 bit tasks? I thought the thread pointer is a GPR, or is this just > > for compat tasks? > > The TLS is stored in a co-processor register which is read-only for > userspace. I should elaborate: the register is RW for AArch64 tasks, RO for aarch32 tasks (although that doesn't affect the need for the ptrace request). Will -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
